Bird beak sign (esophagus)

Last revised by Mohammadtaghi Niknejad ◉ on 6 Dec 2022

Citation, DOI, disclosures and article data

Citation:

Gaillard F, Niknejad M, Bell D, et al. Bird beak sign (esophagus). Reference article, Radiopaedia.org (Accessed on 28 Mar 2023) https://doi.org/10.53347/rID-5996

DOI:

https://doi.org/10.53347/rID-5996

Permalink:

https://radiopaedia.org/articles/5996

rID:

5996

Article created:

5 Apr 2009, Frank Gaillard ◉ ◈

Disclosures:

At the time the article was created Frank Gaillard had no recorded disclosures.

View Frank Gaillard's current disclosures

Last revised:

6 Dec 2022, Mohammadtaghi Niknejad ◉

Disclosures:

At the time the article was last revised Mohammadtaghi Niknejad had no financial relationships to ineligible companies to disclose.

View Mohammadtaghi Niknejad's current disclosures

Revisions:

24 times, by 10 contributors - see full revision history and disclosures

Systems:

Gastrointestinal

Sections:

Signs

Tags:

refs

Synonyms:

Oesophageal bird beak sign
Esophageal bird beak sign
Bird beak sign in achalasia

The bird's beak sign of the esophagus is used to refer to the tapering of the inferior esophagus in achalasia. The same appearance is also referred to as the rat's tail sign.

The appearance, although classically occurring in primary achalasia, can also occur in pseudoachalasia due to a gastric tumor involving the gastro-esophageal junction.